Local scale extreme low pH conditions and genetic differences shape phenotypic variation in a broad dispersal copepod species

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dc.contributor.authorAguilera, Victor M.
dc.contributor.authorSepulveda, Fabiola
dc.contributor.authorvon Dassow, Peter
dc.contributor.authorGaitan-Espitia, Juan Diego
dc.contributor.authorMesas, Andres
dc.contributor.authorVargas, Cristian A.
dc.date.accessioned2025-01-20T17:21:14Z
dc.date.available2025-01-20T17:21:14Z
dc.date.issued2023
dc.description.abstractExtreme low pH events in estuaries and upwelling areas can modulate the phenotypic and genetic diversity of natural populations. To test this hypothesis, we explored the linkage between local scale extreme low pH events, genetic diversity, and variation in fecundity-related traits (body size, egg size, and egg production rate) in the broad-dispersal copepod Acartia tonsa. We assessed genetic and phenotypic characteristics of populations by contrasting extreme low pH environments (upwelling and temperate estuary) in the coastal Southeast Pacific, under natural and experimental conditions. These populations showed significant genetic differentiation with higher diversity in mitochondrial and nuclear loci (encoding mtCOI and 18S rRNA) in the estuarine population. Copepods from this population are exposed to more frequent extreme low pH events (< 7.7), and the adult females exhibit consistent phenotypic variation in body size, egg size, and egg production rate across different cohorts. Experimental acclimation to extreme low pH conditions revealed no significant differences in fecundity-related traits between A. tonsa populations. Although these results partially support our hypothesis, the experimental findings suggest other drivers might also influence phenotypic differences in the local environments.
dc.description.funderAgencia Nacional de Investigacin y Desarrollo10.13039/501100020884
dc.fuente.origenWOS
dc.identifier.doi10.3389/fmars.2023.1221132
dc.identifier.eissn2296-7745
dc.identifier.urihttps://doi.org/10.3389/fmars.2023.1221132
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91450
dc.identifier.wosidWOS:001127877200001
dc.language.isoen
dc.revistaFrontiers in marine science
dc.rightsacceso restringido
dc.subjectcoastal variability
dc.subjectcarbon chemistry
dc.subjectextreme events
dc.subjecttemperate and subtropical systems
dc.subjectgene flow
dc.subjectphenotypic plasticity
dc.subjectcopepods
dc.subject.ods14 Life Below Water
dc.subject.ods13 Climate Action
dc.subject.odspa14 Vida submarina
dc.subject.odspa13 Acción por el clima
dc.titleLocal scale extreme low pH conditions and genetic differences shape phenotypic variation in a broad dispersal copepod species
dc.typeartículo
dc.volumen10
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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